[SOLVED] Can't get $_SESSION working

[ana9]

I have the following on a page: (I have session_start(); on all pages)
<?php
session_start();   
if (isset($_SESSION['auth'])=="yes")
{
  echo "<p>&nbsp;</p>
<p>&nbsp;</p>
<p align='center'><font face='verdana'>You are registered.</font></p>
";
}
etc..... ?>
so that when a user registers on another page if they hit the back button they cannot register a second time.

The person is redirected to a second page where their info is inserted into the mssql database then I call:
  $_SESSION['auth']="yes";   
to set the variable

When I run this setup on my local machine it works perfectly, however when I put it up on the server it does not work.  I am running sqlserver2005, windows server 2003, IIS6, php5.

[fert]

[code]
if (isset($_SESSION['auth'])=="yes")
[/code]
should be
[code]
if ($_SESSION['auth']=="yes")
[/code]

[ana9]

I had that code originally and I would get an error the first time the page was loaded because there was no value for the variable.  By putting in the ISSET it eliminated the error and everything was working fine until I put it on the server.

[redbullmarky]

but isset does exactly that - it tells you if a var is set (ie, holds a value). [url=http://www.php.net/isset]isset[/url] returns either true or false. so what your check actually equates to is:
if TRUE/FALSE == 'yes'
which will always fail.

using both a check of being set as well as a check of its value should work:

[code]
<?php
if (isset($_SESSION['auth']) && $_SESSION['auth'] == "yes")
?>
[/code]

hope that helps
Cheers
Mark

[ana9]

That did the trick, thanks Mark.

[redbullmarky]

;) no probs